Huawei SUN2000-2KTL-L1 User Manual page 92

SUN2000-(2KTL-6KTL)-L1
User Manual
Alarm ID Alarm
Name
2037 Grid
Underfre
quency
2038 Unstable
Grid
Frequenc
y
2039 Output
Overcurr
ent
Issue 03 (2020-07-20)
Alarm Possible Causes
Severity
Major Cause ID = 1
Power grid exception: The
actual power grid
frequency is lower than the
standard requirement for
the local power grid.
Major Cause ID = 1
Power grid exception: The
actual grid frequency
change rate does not
comply with the local
power grid standard.
Major Cause ID = 1
The power grid voltage
drops dramatically or the
power grid is short-
circuited. As a result, the
SUN2000 transient output
current exceeds the upper
threshold and therefore the
SUN2000 protection is
triggered.
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Troubleshooting
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The SUN2000
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the power grid
frequency is within the
allowed range. If no, contact
the local power operator. If
yes, modify the grid
underfrequency protection
threshold through the mobile
app, SmartLogger, or NMS
with the consent of the local
power operator.
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The SUN2000
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the power grid
frequency is within the
allowed range. If no, contact
the local power operator.
1. The SUN2000 detects its
external working conditions
in real time. After the fault is
rectified, the SUN2000
automatically recovers.
2. If the alarm occurs frequently
and affects the energy yield
of the power plant, check
whether the output is short-
circuited. If the fault persists,
contact your dealer or
Huawei technical support.
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